Break-even Calculator

Written by Great Medico

Updated September 25, 2026 •2 min read

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A good business calculator should make the assumptions easier to see, not bury them. Break-even Calculator focuses on the specific inputs shown on the page and turns them into one usable summary.

What this calculator does

Break-even Calculator calculates contribution per unit and the sales volume and revenue needed for contribution to cover fixed costs. Its scope is intentionally narrow: the calculation follows the visible inputs and does not pretend to include financial variables the calculator never asks you to provide.

How to use it

Enter Currency, Fixed costs, Selling price per unit, and Variable cost per unit. Use figures from the same reporting period and the same accounting, workforce, inventory, or campaign definition wherever possible. The currency selector changes display currency only; it does not perform an exchange-rate conversion. Before using the result in a decision, recheck unusually large or negative values against the source data rather than assuming the calculator is correcting an inconsistent input.

How the calculation works

Contribution per unit = selling price − variable cost per unit. Break-even units = fixed costs ÷ contribution per unit, and break-even revenue = break-even units × selling price. A valid result requires selling price to exceed variable cost.

Example

At a $50 selling price and $20 variable cost, each unit contributes $30. With $50,000 fixed cost, break-even is about 1,666.67 units, or roughly $83,333.33 of revenue.

How to interpret the result

The result is best used as a decision-support threshold or valuation scenario. It becomes more informative when you compare several assumptions, because a small change in price, margin, growth, discount rate, cash flow, or capital requirement can materially change the conclusion.

Limitations and notes

The calculation is only as consistent as its inputs. Accounting policy, attribution rules, period length, one-time items, seasonality, and local reporting conventions can change what should be included in a numerator or denominator. Use the same definitions when comparing periods, and do not treat a simplified ratio as a complete operational diagnosis.